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Finding the Fourth Proportional to 477.40, 716.14 and 188.68

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Solution

The fourth proportional to 477.40, 716.14 and 188.68 is: 283.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.40 : 716.14 = 188.68 : x
  2. Step 2: Convert to fraction form
    477.40/716.14 = 188.68/x
  3. Step 3: Cross multiply
    477.40x = 716.14 × 188.68
  4. Step 4: Simplify right side
    477.40x = 135,121.30
  5. Step 5: Solve for x
    x = 135,121.30/477.40
  6. Step 6: Final answer
    x = 283.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.